A heat treatment apparatus and a heat treatment method for a high-strength bolt fastener

Abstract

The application discloses a heat treatment equipment and heat treatment method of high-strength bolt fasteners, and relates to the technical field of heat treatment equipment. The heat treatment equipment of high-strength bolt fasteners comprises a storage box, and further comprises: a plurality of graded quenching modules arranged above the storage box and used for graded quenching of the high-strength bolt fasteners; and a lifting module arranged at the bottom of the storage box. The heat treatment equipment and heat treatment method of high-strength bolt fasteners can facilitate continuous multistage quenching operation of the high-strength bolt fasteners during quenching, can control the cooling speed in stages, can control the cooling speed, can balance the hardness and stress, can circulate the quenching oil, can drive the high-strength bolt fasteners to shake, and can improve the quenching quality. After quenching is completed, the high-strength bolt fasteners can be driven to shake, so that the quenching oil on the surface of the high-strength bolt fasteners can be separated, and the quenching quality is ensured.

Description

Technical Field

[0001] This invention relates to the field of heat treatment equipment technology, specifically to a heat treatment device and method for high-strength bolt fasteners. Background Technology

[0002] Heat treatment of high-strength bolts (typically grade 8.8 and above) is a key process for improving their strength, hardness, toughness, and fatigue resistance. The heat treatment of high-strength bolts usually includes quenching and tempering (quenching and tempering). In existing technology, oil bath quenching is commonly used. However, high-strength bolts are made of high-carbon steel and require slow cooling with strict control of the cooling rate. The reason is that high-carbon martensite is brittle, and water cooling easily leads to cracking due to the superposition of thermal stress and structural stress. Oil cooling or isothermal quenching can reduce stress, promote the formation of lower bainite, and improve toughness.

[0003] However, existing heat treatment equipment and methods for high-strength bolts and fasteners make it difficult to control the cooling rate during quenching, which affects the quality of quenching. At the same time, high-strength bolts and fasteners tend to pile up during quenching, and after quenching, quenching oil residue is easily left on the surface of the high-strength bolts and fasteners, which also affects the quality of quenching. Summary of the Invention

[0004] The purpose of this invention is to provide a heat treatment device and method for high-strength bolt fasteners to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat treatment device for high-strength bolt fasteners, comprising a storage box, and further comprising:

[0006] Multiple graded quenching modules are arranged above the storage box for graded quenching of high-strength bolt fasteners;

[0007] A lifting module is located at the bottom of the storage box, and a first movable plate is connected to the lifting module. The lifting module is used to lift the first movable plate.

[0008] A reset mechanism is disposed above the first movable plate, and a hollow plate is connected to the reset mechanism. The reset mechanism is used to reset the movement of the hollow plate.

[0009] Each of the graded quenching modules includes:

[0010] The housing allows the first movable plate to be raised and lowered within the housing.

[0011] A liquid supply tank is fixed to the side wall of the tank body and connected to the tank body through a liquid supply pipe;

[0012] A liquid collection tank is fixed to the side wall of the tank body;

[0013] A liquid collection hood is fixedly inserted into the side wall of the box and connected to the liquid collection tank through a liquid collection pipe;

[0014] A circulation mechanism, located on the side wall of the housing, is used to circulate the quenching oil.

[0015] Preferably, the circulation mechanism includes a circulation pump fixedly connected to the side wall of the housing, and a liquid extraction pipe is fixedly connected between the inlet of the circulation pump and the housing, and a cooling tank is fixedly connected to the outlet of the circulation pump, and a return pipe is fixedly connected between the cooling tank and the housing.

[0016] Preferably, a return mechanism is provided between the collection tank and the supply tank;

[0017] The liquid return mechanism includes two symmetrically arranged movable rods inserted into the side wall of the liquid collection tank. One end of each movable rod is fixedly connected to a second movable plate, which slides within the liquid collection tank. The other end of each movable rod is fixedly connected to a movable block. Each movable rod has a first spring sleeved on its side wall. A connecting pipe is fixedly connected between the liquid collection tank and the liquid supply tank. A connecting frame is fixedly connected to the side wall of the movable block. A push plate is fixedly connected to the top of the connecting frame. The bottom of the push plate has a first inclined surface, and a perforated plate can slide on the first inclined surface.

[0018] Preferably, a first opening and closing mechanism is provided inside the liquid supply pipe;

[0019] The first opening and closing mechanism includes a fixing ring fixedly connected to the end of the liquid supply pipe, and a first fixing block fixedly connected to the inner side wall of the liquid supply pipe. Two symmetrically arranged first T-shaped guide rods are inserted into the side wall of the first fixing block, and a sealing disc is fixedly connected to one end of each first T-shaped guide rod. A second spring is sleeved on the side wall of each first T-shaped guide rod.

[0020] Preferably, a second opening and closing mechanism is provided inside the liquid collection hood;

[0021] The second opening and closing mechanism includes a sloping bottom at the bottom of the liquid collection hood, and a second fixing block is fixedly connected to the top of the liquid collection hood. Two symmetrically arranged second T-shaped guide rods are inserted into the side wall of the second fixing block, and a sealing plate is fixedly connected to one end of each second T-shaped guide rod. A third spring is sleeved on the side wall of each second T-shaped guide rod, and the movement of the sealing disc and the sealing plate is driven by the first pushing mechanism.

[0022] Preferably, the first pushing mechanism includes two symmetrically arranged stops fixedly connected to the top of the box, and two symmetrically arranged third fixing blocks fixedly connected to the bottom of the hollow plate. Two symmetrically arranged first sleeve rods are fixedly connected to the side walls of each of the third fixing blocks, and a first sleeve is sleeved on the side wall of each of the first sleeve rods. A locking block is fixedly connected to the other end of the first sleeve, and a second inclined surface is provided on the top of the locking block. A fourth spring is sleeved on the side wall of each of the first sleeves, and a push pin is fixedly connected to the side wall of the locking block. Two symmetrically arranged connecting plates are fixedly connected to the top of the first moving plate, and a push block is fixedly connected to the top of the connecting plate. A third inclined surface is provided at the bottom of the push block, and the push pin can slide on the third inclined surface. A baffle is fixedly connected to the inner side wall of the liquid collection hood.

[0023] Preferably, the reset mechanism includes two symmetrically arranged second sleeve rods fixedly connected to the top of the first movable plate, and a second sleeve is sleeved on the side wall of the second sleeve rod. A support block is fixedly connected to the upper end of the second sleeve, and a guide rod is inserted into the side wall of each support block. A fourth fixing block is fixedly connected to both ends of the guide rod, and the fourth fixing block is fixed to the bottom of the hollow plate. A fifth spring is sleeved on the side wall of each second sleeve, and a sixth spring is sleeved on the side wall of each guide rod. A second pushing mechanism for pushing the hollow plate to move is provided on the top of the first movable plate, and a third pushing mechanism for pushing the hollow plate to move is provided on the side wall of the liquid extraction tube.

[0024] Preferably, the second pushing mechanism includes a mounting plate fixedly connected to the top of the first movable plate, and a plurality of arrayed triangular blocks are fixedly connected to the side wall of the mounting plate. A connecting rod is fixedly connected to the bottom of the hollow plate, and a first pushing rod is fixedly connected to the lower end of the connecting rod.

[0025] Preferably, the third pushing mechanism includes a fixed box that is fixedly inserted into the side wall of the liquid extraction tube, and a rotating fan is rotatably connected inside the fixed box via a rotating shaft. A cam is fixedly connected to the upper end of the rotating shaft, and a second pushing rod is inserted into the side wall of the box. A ring is fixedly sleeved on the side wall of the second pushing rod, and a seventh spring is sleeved on the side wall of the second pushing rod.

[0026] A heat treatment method for high-strength bolt fasteners, utilizing the aforementioned heat treatment equipment for high-strength bolt fasteners, includes the following steps:

[0027] S1: By setting multiple graded quenching modules, during quenching, high-strength bolts are placed on the hollow plate along with the metal frame. Then, the lifting module drives the first moving plate to move downwards, and at the same time, the reset mechanism drives the hollow plate to move downwards. During quenching, when the hollow plate separates from the side wall of the push plate, the second moving plate can move towards the box under the action of the first spring. At this time, the locking block can slide along the side wall of the stop block to the inner wall of the box. When the locking block slides into the fixed ring, under the action of the fourth spring, it can push the sealing plate to move away from the fixed ring. At the same time, the second spring is compressed. At this time, the first opening and closing mechanism opens, and the locking block can abut against the inner wall of the fixed ring, thereby limiting the hollow plate. At this time, the quenching oil in the supply tank can enter the box through the supply pipe and be above the first moving plate.

[0028] S2: When the first moving plate continues to move downward, the fifth spring is gradually stretched. At this time, the quenching oil can be gradually filled between the hollow plate and the first moving plate. When the first moving plate moves downward, the connecting plate can drive the pushing block to move downward. When the third inclined surface abuts against the pushing pin, the locking block can be pushed to move closer to the third fixed block and exit from the fixed ring. At the same time, the fourth spring is compressed. At this time, the sealing disc can move and reset under the action of the second spring and abut against the end of the fixed ring to form a seal. This allows the hollow plate to move and reset downward under the action of the fifth spring, thereby immersing the high-strength bolt fastener in the quenching oil for quenching treatment.

[0029] S3: During quenching, the circulation pump is started, allowing the quenching oil in the chamber to enter the cooling chamber through the extraction pipe and circulation pump for cooling. After cooling, the quenching oil returns to the chamber through the return pipe, thus circulating the quenching oil and ensuring the quenching effect. After this stage of quenching is completed, the lifting mechanism can drive the first moving plate and the hollow plate to continue moving downwards. When the locking block on the other side contacts the top of the baffle, the fourth spring pushes the sealing plate towards the second fixed block. At the same time, the third spring is compressed. At this time, the second opening and closing mechanism is opened, allowing the quenching oil above the first moving plate to enter the collection hood and collection pipe. The quenching oil is collected in the box. When the first moving plate continues to move downward, the locking block can abut against the top of the baffle, and the hollow plate will no longer move downward. This allows all the quenching oil above the first moving plate to enter the collection box through the collection hood and collection pipe for collection. Similarly, when the third inclined surface abuts against the push pin, the locking block can be removed from the collection hood, allowing the sealing plate to seal the collection hood under the action of the third spring. Similarly, by driving the first moving plate and the hollow plate to continue moving downward through the lifting module, multi-stage quenching operation of high-strength bolt fasteners can be realized. The cooling rate can be controlled in stages, which is convenient for controlling the cooling rate, balancing hardness and stress, and improving the quality of quenching.

[0030] S4: During quenching, when the quenching oil circulates, it can enter the fixed box and impact the surface of the rotating fan, causing the fan and shaft to rotate. When the shaft rotates, it can drive the cam to rotate. When the tip of the cam abuts against the end of the second push rod, it can push the second push rod to move into the box. At the same time, the seventh spring is compressed and abuts against the side wall of the hollow plate, thereby pushing the hollow plate to move. The sixth spring deforms. When the tip of the cam passes the end of the second push rod, the second push rod can move back to its original position under the action of the seventh spring. The hollow plate can also move back to its original position under the action of the sixth spring. This process repeats, allowing the hollow plate to move back and forth and causing the high-strength bolt fasteners to shake, thus improving the quenching effect.

[0031] S5: After quenching is completed, when the first moving plate moves away from the hollow plate, the quenching oil on the top of the first moving plate can be gradually discharged, thereby gradually exposing the high-strength bolt fasteners. Furthermore, when the first moving plate moves downward away from the hollow plate, the mounting plate drives the triangular block to move downward. When the triangular block abuts against the top of the first push rod, it can push the hollow plate to move. At the same time, the sixth spring deforms. When the triangular block passes the first push rod, the hollow plate can move and reset under the action of the sixth spring. By repeating this process, the hollow plate can move back and forth, which can drive the high-strength bolt fasteners to shake, thereby facilitating the removal of quenching oil from their surface and ensuring the quality of quenching.

[0032] S6: Next, the lifting module drives the first moving plate and the hollow plate to move upward and reset. When the hollow plate slides along the first inclined surface to the side wall of the push plate, it can push the push plate to move. At the same time, the connecting frame and the moving rod drive the second moving plate to move. Meanwhile, the first spring is compressed. At this time, the quenching oil in the collection tank can be squeezed and returned to the supply tank through the connecting pipe.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] This heat treatment equipment and method for high-strength bolts and fasteners, by setting up multiple staged quenching modules, facilitates continuous multi-stage quenching of high-strength bolts and fasteners during quenching. It allows for phased control of the cooling rate, balancing hardness and stress. Simultaneously, it circulates the quenching oil and agitates the high-strength bolts and fasteners, improving quenching quality. After quenching, the agitation further facilitates the removal of quenching oil from the surface, ensuring the final quenching quality. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the internal structure of the box in this invention;

[0037] Figure 3 This is a schematic diagram of the overall structure of the graded quenching module in this invention;

[0038] Figure 4 This is a partial cross-sectional view of the fixing box in this invention;

[0039] Figure 5 This is a partial cross-sectional view of the liquid collection tank in this invention;

[0040] Figure 6 This is a schematic diagram showing the position of the first opening and closing mechanism in this invention;

[0041] Figure 7 This is a schematic diagram showing the position of the second opening and closing mechanism in this invention;

[0042] Figure 8 This is a partial cross-sectional view of the liquid supply pipe in this invention;

[0043] Figure 9 This is a partial cross-sectional view of the liquid collection hood in this invention;

[0044] Figure 10 for Figure 2 Enlarged structural diagram at point A;

[0045] Figure 11 for Figure 4 Enlarged structural diagram at point B;

[0046] Figure 12 for Figure 6 Enlarged structural diagram at point C;

[0047] Figure 13 for Figure 7 Enlarged structural diagram at point D;

[0048] Figure 14 for Figure 10 Enlarged structural diagram at point E;

[0049] Figure 15 for Figure 10 A magnified structural diagram at point F in the middle.

[0050] In the diagram: 1. Storage box; 201. Circulating pump; 202. Liquid extraction pipe; 203. Cooling tank; 204. Liquid return pipe; 301. Moving rod; 302. Moving block; 303. First spring; 304. Second moving plate; 305. Connecting frame; 306. Push plate; 307. First inclined plane; 308. Connecting pipe; 401. Fixing ring; 402. First fixing block; 403. First T-shaped guide rod; 404. Second spring; 405. Sealing plate; 501. Sloping bottom; 502. Sealing plate; 503. Second fixing block; 504. Second T-shaped guide rod; 505. Third spring; 601. Stop block; 602. Third fixing block; 603. First sleeve rod; 604. First sleeve; 605. Fourth spring; 606. Locking block; 607. Second inclined plane; 608. Connecting plate; 6 09. Pushing block; 610. Third inclined plane; 611. Pushing pin; 612. Baffle; 701. Second sleeve rod; 702. Second sleeve tube; 703. Fifth spring; 704. Support block; 705. Fourth fixing block; 706. Guide rod; 707. Sixth spring; 801. Fixing box; 802. Rotating shaft; 803. Rotating fan; 804. Cam; 805. Second pushing rod; 806. Ring; 807. Seventh spring; 901. Connecting rod; 902. First pushing rod; 903. Mounting plate; 904. Triangular block; 10. Graded quenching module; 1001. Box body; 1002. Liquid supply tank; 1003. Liquid collection tank; 1004. Liquid supply pipe; 1005. Liquid collection pipe; 1006. Liquid collection cover; 11. Lifting module; 12. First moving plate; 13. Hollow plate. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Please see Figures 1-15 The present invention provides a heat treatment device for high-strength bolt fasteners, including a storage box 1, and further comprising:

[0053] Multiple graded quenching modules 10 are set above the storage box 1 for graded quenching of high-strength bolt fasteners;

[0054] The lifting module 11 is located at the bottom of the storage box 1, and a first moving plate 12 is connected to the lifting module 11. The lifting module 11 is used to lift the first moving plate 12. The lifting module 11 is a well-known technology in this field and will not be described in detail here.

[0055] A reset mechanism is located above the first movable plate 12, and a perforated plate 13 is connected to the reset mechanism. The reset mechanism is used to reset the movement of the perforated plate 13. The perforated plate 13 can have a large and dense aperture. Furthermore, the perforated plate 13 can move downward rapidly under the action of the fifth spring 703, and drive the high-strength bolt to be quickly immersed in the quenching oil along with the metal frame. The quenching oil passes through the perforated plate 13 at a very high speed.

[0056] Each staged quenching module 10 includes:

[0057] The housing 1001 allows the first movable plate 12 to be raised and lowered within the housing 1001;

[0058] The liquid supply tank 1002 is fixed to the side wall of the tank body 1001 and is connected to the tank body 1001 through the liquid supply pipe 1004. The diameter of the liquid supply pipe 1004 is selected with appropriate size during the design to ensure the liquid supply speed.

[0059] The liquid collection tank 1003 is fixed to the side wall of the tank body 1001;

[0060] The liquid collection hood 1006 is fixedly inserted into the side wall of the box 1001 and is connected to the liquid collection tank 1003 through the liquid collection pipe 1005;

[0061] The circulation mechanism, located on the side wall of the housing 1001, is used to circulate the quenching oil, facilitating continuous multi-stage quenching of high-strength bolts and fasteners. During quenching, the cooling rate is controlled in stages, facilitating the control of the cooling speed and balancing hardness and stress. At the same time, it can circulate the quenching oil and cause the high-strength bolts and fasteners to shake, which can improve the quenching quality. After quenching, it can cause the high-strength bolts and fasteners to shake, thereby facilitating the removal of quenching oil from their surface and ensuring the quality of quenching.

[0062] The circulation mechanism includes a circulation pump 201 fixedly connected to the side wall of the housing 1001, and a liquid extraction pipe 202 fixedly connected between the inlet of the circulation pump 201 and the housing 1001. A cooling tank 203 is fixedly connected to the outlet of the circulation pump 201. A cooling module can be installed in the cooling tank 203, and a return pipe 204 is fixedly connected between the cooling tank 203 and the housing 1001. When the circulation pump 201 is started, the quenching oil in the housing 1001 can enter the cooling tank 203 through the liquid extraction pipe 202 and the circulation pump 201 for cooling. The cooled quenching oil enters the housing 1001 through the return pipe 204, thereby circulating the quenching oil and ensuring the quenching effect.

[0063] A liquid return mechanism is provided between the liquid collection tank 1003 and the liquid supply tank 1002;

[0064] The return mechanism includes two symmetrically arranged movable rods 301 inserted into the side wall of the collection tank 1003. One end of each movable rod 301 is fixedly connected to a second movable plate 304, which slides within the collection tank 1003. The other end of each movable rod 301 is fixedly connected to a movable block 302. A first spring 303 is sleeved on the side wall of each movable rod 301. A connecting pipe 308 is fixedly connected between the collection tank 1003 and the supply tank 1002. Cooling modules are also installed in both the collection tank 1003 and the supply tank 1002. A one-way valve is installed in the connecting pipe 308, with the one-way valve's conduction direction from the collection tank 1003 to the supply tank 1002. A connecting frame 305 is fixedly connected to the side wall of the movable block 302, and a push plate 306 is fixedly connected to the top of the connecting frame 305. The bottom of the push plate 306 has a first inclined surface 307, which is hollowed out. Plate 13 can slide on the first inclined surface 307. During quenching, when the hollow plate 13 disengages from the side wall of the push plate 306, the second moving plate 304 can move towards the box 1001 under the action of the first spring 303, ensuring that the quenching oil in the box 1001 can enter the collection tank 1003 for collection and temporary storage. After quenching is completed, the lifting module 11 drives the first moving plate 12 and the hollow plate 13 to move upward and reset. When the hollow plate 13 slides along the first inclined surface 307 to the side wall of the push plate 306, it can push the push plate 306 to move. At the same time, the connecting frame 305 and the moving rod 301 drive the second moving plate 304 to move. At the same time, the first spring 303 is compressed. At this time, the quenching oil in the collection tank 1003 can be squeezed and returned to the supply tank 1002 through the connecting pipe 308.

[0065] A first opening and closing mechanism is installed inside the liquid supply pipe 1004;

[0066] The first opening and closing mechanism includes a fixing ring 401 fixedly connected to the end of the liquid supply pipe 1004, and a first fixing block 402 fixedly connected to the inner side wall of the liquid supply pipe 1004. Two symmetrically arranged first T-shaped guide rods 403 are inserted into the side wall of the first fixing block 402, and a sealing disc 405 is fixedly connected to one end of the first T-shaped guide rod 403. A second spring 404 is sleeved on the side wall of each first T-shaped guide rod 403.

[0067] A second opening and closing mechanism is provided inside the liquid collection hood 1006;

[0068] The second opening and closing mechanism includes a sloping bottom 501 at the bottom of the liquid collection hood 1006, and a second fixing block 503 is fixedly connected to the top of the liquid collection hood 1006. Two symmetrically arranged second T-shaped guide rods 504 are inserted into the side wall of the second fixing block 503, and a sealing plate 502 is fixedly connected to one end of the second T-shaped guide rod 504. A third spring 505 is sleeved on the side wall of each second T-shaped guide rod 504. The movement of the sealing disc 405 and the sealing plate 502 is driven by a first pushing mechanism. The sealing disc 405 and the sealing plate 502 move by the first pushing mechanism. When the sealing disc 405 moves away from the fixing ring 401, the second spring 404 is compressed. When the sealing plate 502 moves closer to the second fixing block 503, the third spring 505 is compressed.

[0069] The first pushing mechanism includes two symmetrically arranged stop blocks 601 fixedly connected to the top of the housing 1001, and two symmetrically arranged third fixing blocks 602 fixedly connected to the bottom of the hollow plate 13. Two symmetrically arranged first sleeve rods 603 are fixedly connected to the side walls of each third fixing block 602, and a first sleeve 604 is fitted onto the side wall of each first sleeve rod 603. A locking block 606 is fixedly connected to the other end of the first sleeve 604, and a second inclined surface 607 is provided on the top of the locking block 606. A fourth spring 605 is fitted onto the side wall of each first sleeve 604, and a push pin 611 is fixedly connected to the side wall of the locking block 606. Two symmetrically arranged connecting plates 608 are fixedly connected to the top of the first moving plate 12, and the top of the connecting plate 608... A push block 609 is fixedly connected, and a third inclined surface 610 is provided at the bottom of the push block 609. The push pin 611 can slide on the third inclined surface 610. A baffle 612 is fixedly connected to the inner wall of the liquid collection cover 1006. When the locking block 606 slides into the fixing ring 401, under the action of the fourth spring 605, it can push the sealing plate 405 to move away from the fixing ring 401. At the same time, the second spring 404 is compressed. At this time, the first opening and closing mechanism is opened. When the locking block 606 on the other side contacts the top of the baffle 612, under the action of the fourth spring 605, it can push the sealing plate 502 to move closer to the second fixing block 503. At the same time, the third spring 505 is compressed. At this time, the second opening and closing mechanism is opened.

[0070] The reset mechanism includes two symmetrically arranged second sleeve rods 701 fixedly connected to the top of the first moving plate 12, and a second sleeve 702 is sleeved on the side wall of the second sleeve rod 701. A support block 704 is fixedly connected to the upper end of the second sleeve 702, and a guide rod 706 is inserted into the side wall of each support block 704. A fourth fixing block 705 is fixedly connected to both ends of the guide rod 706, and the fourth fixing block 705 is fixed to the bottom of the hollow plate 13. A fifth spring 703 is sleeved on the side wall of each second sleeve 702, and a sixth spring 707 is sleeved on the side wall of each guide rod 706. A second pushing mechanism for pushing the hollow plate 13 to move is provided on the top of the first moving plate 12, and a third pushing mechanism for pushing the hollow plate 13 to move is provided on the side wall of the liquid extraction tube 202, which plays a guiding and reset role in the movement of the hollow plate 13.

[0071] The second pushing mechanism includes a mounting plate 903 fixedly connected to the top of the first moving plate 12, and a plurality of arrayed triangular blocks 904 fixedly connected to the side wall of the mounting plate 903. A connecting rod 901 is fixedly connected to the bottom of the hollow plate 13, and a first pushing rod 902 is fixedly connected to the lower end of the connecting rod 901. After quenching, when the first moving plate 12 moves away from the hollow plate 13, the quenching oil above the first moving plate 12 can be gradually discharged, thereby gradually exposing the high-strength bolt fasteners. Furthermore, when the first moving plate 12 moves away from the hollow plate... When the direction of 13 moves downward, the mounting plate 903 drives the triangular block 904 to move downward. When the triangular block 904 abuts against the top of the first push rod 902, it can push the hollow plate 13 to move. At the same time, the sixth spring 707 deforms. When the triangular block 904 passes the first push rod 902, the hollow plate 13 can move and reset under the action of the sixth spring 707. By repeating this process, the hollow plate 13 can move back and forth, which can drive the high-strength bolt fastener to shake, thereby facilitating the removal of quenching oil from its surface and ensuring the quality of quenching.

[0072] The third pushing mechanism includes a fixed box 801 fixedly inserted into the side wall of the liquid extraction pipe 202, and a rotating fan 803 rotatably connected to the fixed box 801 via a rotating shaft 802. A cam 804 is fixedly connected to the upper end of the rotating shaft 802, and a second pushing rod 805 is inserted into the side wall of the box 1001. A ring 806 is fixedly sleeved on the side wall of the second pushing rod 805, and a seventh spring 807 is sleeved on the side wall of the second pushing rod 805. During quenching, when the quenching oil circulates, it can enter the fixed box 801 and impact the surface of the rotating fan 803, causing the rotating fan 803 and the rotating shaft 802 to rotate. When the rotating shaft 802 rotates, it can drive the cam 804 to rotate. When the tip of the cam 804 abuts against the end of the second push rod 805, it can push the second push rod 805 to move into the housing 1001. At the same time, the seventh spring 807 is compressed and abuts against the side wall of the hollow plate 13, thereby pushing the hollow plate 13 to move. The sixth spring 707 deforms. When the tip of the cam 804 passes the end of the second push rod 805, the second push rod 805 can move back to its original position under the action of the seventh spring 807. The hollow plate 13 can also move back to its original position under the action of the sixth spring 707. By repeating this process, the hollow plate 13 can move back and forth, causing the high-strength bolt fasteners to shake, thereby improving the quenching effect.

[0073] A heat treatment method for high-strength bolt fasteners, utilizing the aforementioned heat treatment equipment for high-strength bolt fasteners, includes the following steps:

[0074] S1: By setting multiple graded quenching modules 10, during quenching, high-strength bolts are placed on the hollow plate 13 along with the metal frame. Then, the lifting module 11 drives the first moving plate 12 to move downward, and at the same time, the reset mechanism drives the hollow plate 13 to move downward. During quenching, when the hollow plate 13 disengages from the side wall of the push plate 306, the second moving plate 304 can move towards the housing 1001 under the action of the first spring 303. At this time, the locking block 606 can slide along the side wall of the stop block 601. When the locking block 606 slides into the fixing ring 401, under the action of the fourth spring 605, it can push the sealing plate 405 to move away from the fixing ring 401. At the same time, the second spring 404 is compressed. At this time, the first opening and closing mechanism is opened, and the locking block 606 can abut against the inner wall of the fixing ring 401, thereby limiting the hollow plate 13. At this time, the quenching oil in the liquid supply tank 1002 can enter the box 1001 through the liquid supply pipe 1004 and be above the first moving plate 12.

[0075] S2: When the first moving plate 12 continues to move downward, the fifth spring 703 is gradually stretched. At this time, the quenching oil can be gradually filled between the hollow plate 13 and the first moving plate 12. When the first moving plate 12 moves downward, the connecting plate 608 can drive the pushing block 609 to move downward. When the third inclined surface 610 abuts against the pushing pin 611, the locking block 606 can be pushed to move towards the third fixing block 602 and exit from the fixing ring 401. At the same time, the fourth spring 605 is compressed. At this time, the sealing disc 405 can move and reset under the action of the second spring 404 and abut against the end of the fixing ring 401 to form a seal. This allows the hollow plate 13 to move and reset downward under the action of the fifth spring 703, thereby immersing the high-strength bolt fastener in the quenching oil for quenching treatment. Only after the quenching oil is completely filled between the hollow plate 13 and the first moving plate 12 will the hollow plate 13 drive the high-strength bolt fastener to move downward quickly and immerse it in the quenching oil.

[0076] S3: During quenching, the circulation pump 201 is started, allowing the quenching oil in the chamber 1001 to enter the cooling chamber 203 through the extraction pipe 202 and the circulation pump 201 for cooling. After cooling, the quenching oil enters the chamber 1001 through the return pipe 204, thus circulating the quenching oil and ensuring the quenching effect. After this stage of quenching is completed, the lifting mechanism can drive the first moving plate 12 and the hollow plate 13 to continue moving downward. When the locking block 606 on the other side contacts the top of the baffle 612, the fourth spring 605 can push the sealing plate 502 to move closer to the second fixed block 503. At the same time, the third spring 505 is compressed. At this time, the second opening and closing mechanism is opened, allowing the quenching oil above the first moving plate 12 to enter the collection tank through the collection cover 1006 and the collection pipe 1005. In 1003, when the first moving plate 12 continues to move downward, the locking block 606 can abut against the top of the baffle 612, and the hollow plate 13 no longer moves downward. All the quenching oil above the first moving plate 12 can enter the collection tank 1003 for collection through the collection hood 1006 and the collection pipe 1005. Similarly, when the third inclined surface 610 abuts against the push pin 611, the locking block 606 can be removed from the collection hood 1006, so that the sealing plate 502 can seal the collection hood 1006 under the action of the third spring 505. Similarly, by driving the first moving plate 12 and the hollow plate 13 to continue to move downward through the lifting module 11, multi-stage quenching operation of high-strength bolt fasteners can be realized. The cooling rate can be controlled in stages, which is convenient for controlling the cooling rate, balancing hardness and stress, and improving the quality of quenching.

[0077] S4: During quenching, when the quenching oil circulates, it can enter the fixed box 801 and impact the surface of the rotating fan 803, causing the rotating fan 803 and the rotating shaft 802 to rotate. When the rotating shaft 802 rotates, it can drive the cam 804 to rotate. When the tip of the cam 804 abuts against the end of the second push rod 805, it can push the second push rod 805 to move into the box 1001. At the same time, the seventh spring 807 is compressed and abuts against the side wall of the hollow plate 13, thereby pushing the hollow plate 13 to move. The sixth spring 707 deforms. When the tip of the cam 804 passes the end of the second push rod 805, the second push rod 805 can move back to its original position under the action of the seventh spring 807. And the hollow plate 13 can move back to its original position under the action of the sixth spring 707. This process is repeated, so that the hollow plate 13 can move back and forth, and drive the high-strength bolt fasteners to shake, thereby making the quenching effect better.

[0078] S5: After quenching, when the first moving plate 12 moves away from the hollow plate 13, the quenching oil above the first moving plate 12 is gradually discharged, thereby gradually exposing the high-strength bolt fasteners. Furthermore, when the first moving plate 12 moves downwards away from the hollow plate 13, the mounting plate 903 drives the triangular block 904 downwards. When the triangular block 904 abuts against the top of the first push rod 902, it pushes the hollow plate 13 to move. Simultaneously, the sixth spring 707 deforms. When the triangular block 904 passes the first push rod 902, the hollow plate 13 can move... The six springs 707 move and reset, and repeat this process to make the hollow plate 13 move back and forth. When the locking block 606 abuts against the side wall of the stop block 601, the compression of the fourth spring 605 is large enough to ensure that when the locking block 606 pushes the sealing plate 502 to open the liquid collection cover 1006, the fourth spring 605 is still in a compressed state, and the remaining compression is sufficient to ensure that when the hollow plate 13 moves back and forth, the locking block 606 remains in abutting against the sealing plate 502, which can drive the high-strength bolt fastener to shake, thereby facilitating the removal of quenching oil from its surface and ensuring the quality of quenching.

[0079] S6: Next, the lifting module 11 drives the first moving plate 12 and the hollow plate 13 to move upward and reset. When the hollow plate 13 slides along the first inclined surface 307 to the side wall of the push plate 306, it can push the push plate 306 to move. At the same time, the connecting frame 305 and the moving rod 301 drive the second moving plate 304 to move. At the same time, the first spring 303 is compressed. At this time, the quenching oil in the liquid collection tank 1003 can be squeezed and returned to the liquid supply tank 1002 through the connecting pipe 308.

[0080] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0081] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A heat treatment device for high-strength bolt fasteners, comprising a storage box (1), characterized in that: Also includes: Multiple graded quenching modules (10) are disposed above the storage box (1) for graded quenching of high-strength bolt fasteners; A lifting module (11) is provided at the bottom of the storage box (1), and a first moving plate (12) is connected to the lifting module (11). The lifting module (11) is used to lift the first moving plate (12). A reset mechanism is disposed above the first movable plate (12), and a hollow plate (13) is connected to the reset mechanism. The reset mechanism is used to reset the movement of the hollow plate (13). Each of the graded quenching modules (10) includes: The housing (1001) allows the first movable plate (12) to rise and fall within the housing (1001); A liquid supply tank (1002) is fixed to the side wall of the box body (1001) and is connected to the box body (1001) through a liquid supply pipe (1004); A liquid collection tank (1003) is fixed to the side wall of the box body (1001); A liquid collection hood (1006) is fixedly inserted into the side wall of the box body (1001) and connected to the liquid collection tank (1003) through a liquid collection pipe (1005); A circulation mechanism, located on the side wall of the housing (1001), is used to circulate the quenching oil; The circulation mechanism includes a circulation pump (201) fixedly connected to the side wall of the housing (1001), and a liquid extraction pipe (202) is fixedly connected between the inlet of the circulation pump (201) and the housing (1001). A cooling tank (203) is fixedly connected to the outlet of the circulation pump (201), and a return pipe (204) is fixedly connected between the cooling tank (203) and the housing (1001). A return mechanism is provided between the liquid collection tank (1003) and the liquid supply tank (1002); The reset mechanism includes two symmetrically arranged second sleeve rods (701) fixedly connected to the top of the first moving plate (12), and a second sleeve (702) is sleeved on the side wall of the second sleeve rod (701). A support block (704) is fixedly connected to the upper end of the second sleeve (702), and a guide rod (706) is inserted into the side wall of each support block (704). A fourth fixing block (705) is fixedly connected to both ends of the guide rod (706), and the fourth fixing block (705) is fixed to the bottom of the hollow plate (13). A fifth spring (703) is sleeved on the side wall of each second sleeve (702), and a sixth spring (707) is sleeved on the side wall of each guide rod (706). A second pushing mechanism for pushing the hollow plate (13) to move is provided on the top of the first moving plate (12), and a third pushing mechanism for pushing the hollow plate (13) to move is provided on the side wall of the liquid extraction tube (202). The second pushing mechanism includes a mounting plate (903) fixedly connected to the top of the first moving plate (12), and a plurality of arrayed triangular blocks (904) are fixedly connected to the side wall of the mounting plate (903). A connecting rod (901) is fixedly connected to the bottom of the hollow plate (13), and a first pushing rod (902) is fixedly connected to the lower end of the connecting rod (901). The third pushing mechanism includes a fixed box (801) fixedly inserted into the side wall of the liquid extraction tube (202), and a rotating fan (803) is rotatably connected inside the fixed box (801) via a rotating shaft (802). A cam (804) is fixedly connected to the upper end of the rotating shaft (802), and a second pushing rod (805) is inserted into the side wall of the box body (1001). A ring (806) is fixedly sleeved on the side wall of the second pushing rod (805), and a seventh spring (807) is sleeved on the side wall of the second pushing rod (805).

2. The heat treatment equipment for high-strength bolt fasteners according to claim 1, characterized in that: The return mechanism includes two symmetrically arranged movable rods (301) inserted into the side wall of the collection tank (1003), and a second movable plate (304) is fixedly connected to one end of the movable rod (301). The second movable plate (304) slides in the collection tank (1003), and a movable block (302) is fixedly connected to the other end of the movable rod (301). A first spring (303) is sleeved on the side wall of each of the movable rods (301), and a connecting pipe (308) is fixedly connected between the collection tank (1003) and the supply tank (1002). A connecting frame (305) is fixedly connected to the side wall of the movable block (302), and a push plate (306) is fixedly connected to the top of the connecting frame (305). A first inclined surface (307) is provided at the bottom of the push plate (306), and the hollow plate (13) can slide on the first inclined surface (307).

3. The heat treatment equipment for high-strength bolt fasteners according to claim 2, characterized in that: The liquid supply pipe (1004) is provided with a first opening and closing mechanism; The first opening and closing mechanism includes a fixing ring (401) fixedly connected to the end of the liquid supply pipe (1004), and a first fixing block (402) is fixedly connected to the inner side wall of the liquid supply pipe (1004). Two symmetrically arranged first T-shaped guide rods (403) are inserted into the side wall of the first fixing block (402), and a sealing disc (405) is fixedly connected to one end of the first T-shaped guide rod (403). A second spring (404) is sleeved on the side wall of each first T-shaped guide rod (403).

4. The heat treatment equipment for high-strength bolt fasteners according to claim 3, characterized in that: A second opening and closing mechanism is provided inside the liquid collection hood (1006); The second opening and closing mechanism includes a sloping bottom (501) at the bottom of the liquid collection hood (1006), and a second fixing block (503) is fixedly connected to the top of the liquid collection hood (1006). Two symmetrically arranged second T-shaped guide rods (504) are inserted into the side wall of the second fixing block (503), and a sealing plate (502) is fixedly connected to one end of the second T-shaped guide rod (504). A third spring (505) is sleeved on the side wall of each second T-shaped guide rod (504), and the movement of the sealing plate (405) and the sealing plate (502) is pushed by the first pushing mechanism.

5. The heat treatment equipment for high-strength bolt fasteners according to claim 4, characterized in that: The first pushing mechanism includes two symmetrically arranged stop blocks (601) fixedly connected to the top of the box (1001), and two symmetrically arranged third fixing blocks (602) fixedly connected to the bottom of the hollow plate (13). Two symmetrically arranged first sleeve rods (603) are fixedly connected to the side wall of each of the third fixing blocks (602), and a first sleeve (604) is sleeved on the side wall of each first sleeve rod (603). A locking block (606) is fixedly connected to the other end of the first sleeve (604), and a second inclined surface (607) is provided on the top of the locking block (606). Each of the first sleeves (604) is fitted with a fourth spring (605) on its side wall, and the side wall of the locking block (606) is fixedly connected with a push pin (611). The top of the first moving plate (12) is fixedly connected with two symmetrically arranged connecting plates (608), and the top of the connecting plate (608) is fixedly connected with a push block (609). The bottom of the push block (609) is provided with a third inclined surface (610), and the push pin (611) can slide on the third inclined surface (610). The inner side wall of the liquid collection cover (1006) is fixedly connected with a baffle (612).

6. A heat treatment method for high-strength bolt fasteners, utilizing the heat treatment equipment for high-strength bolt fasteners as described in claim 5, characterized in that: Includes the following steps: S1: By setting multiple graded quenching modules (10), during quenching, the high-strength bolts are placed on the hollow plate (13) along with the metal frame. Then, the first moving plate (12) is moved downward by the lifting module (11), and at the same time, the hollow plate (13) is moved downward by the reset mechanism. During quenching, when the hollow plate (13) is separated from the side wall of the push plate (306), the second moving plate (304) can move towards the box body (1001) under the action of the first spring (303). At this time, the locking block (606) can slide along the side wall of the stop block (601) to the box. When the locking block (606) slides into the fixing ring (401), under the action of the fourth spring (605), it can push the sealing disc (405) to move away from the fixing ring (401). At the same time, the second spring (404) is compressed. At this time, the first opening and closing mechanism is opened, and the locking block (606) can abut against the inner wall of the fixing ring (401), thereby limiting the hollow plate (13). At this time, the quenching oil in the liquid supply tank (1002) can enter the box body (1001) through the liquid supply pipe (1004) and be above the first moving plate (12). S2: When the first moving plate (12) continues to move downward, the fifth spring (703) is gradually stretched. At this time, the quenching oil can be gradually filled between the hollow plate (13) and the first moving plate (12). When the first moving plate (12) moves downward, the push block (609) can be driven to move downward through the connecting plate (608). When the third inclined surface (610) abuts against the push pin (611), the card block (606) can be pushed to move towards the third fixed block (602) and exit from the fixed ring (401). At the same time, the fourth spring (605) is compressed. At this time, the sealing disc (405) can move and reset under the action of the second spring (404) and abut against the end of the fixed ring (401) to form a seal, so that the hollow plate (13) can move and reset downward under the action of the fifth spring (703), thereby immersing the high-strength bolt fastener in the quenching oil for quenching treatment. S3: During quenching, the circulation pump (201) is started, allowing the quenching oil in the chamber (1001) to enter the cooling chamber (203) through the extraction pipe (202) and the circulation pump (201) for cooling. After cooling, the quenching oil enters the chamber (1001) through the return pipe (204), thus circulating the quenching oil and ensuring the quenching effect. After this stage of quenching is completed, the first moving plate (12) and the hollow plate (1001) can be driven by the lifting mechanism. 13) Continuing to move downwards, when the other side's locking block (606) contacts the top of the baffle (612), under the action of the fourth spring (605), it can push the sealing plate (502) towards the second fixed block (503). At the same time, the third spring (505) is compressed. At this time, the second opening and closing mechanism is opened, so that the quenching oil above the first moving plate (12) can enter the collection tank through the collection hood (1006) and the collection pipe (1005). In 1003), when the first moving plate (12) continues to move downward, the locking block (606) can abut against the top of the baffle (612), and the hollow plate (13) no longer moves downward, so that all the quenching oil above the first moving plate (12) can enter the collection tank (1003) through the collection hood (1006) and the collection pipe (1005) for collection. Similarly, when the third inclined surface (610) abuts against the push pin (611), the locking block (606) can be moved downward. 06) Exit from the liquid collection hood (1006) so that the sealing plate (502) can seal the liquid collection hood (1006) under the action of the third spring (505). Similarly, by driving the first moving plate (12) and the hollow plate (13) to continue to move downward through the lifting module (11), the multi-stage quenching operation of high-strength bolt fasteners can be realized, the cooling rate can be controlled in stages, the cooling rate can be controlled, the hardness and stress can be balanced, and the quenching quality can be improved. S4: During quenching, when the quenching oil circulates, it can enter the fixed box (801) and impact the surface of the rotating fan (803), causing the rotating fan (803) and the rotating shaft (802) to rotate. When the rotating shaft (802) rotates, it can drive the cam (804) to rotate. When the tip of the cam (804) abuts against the end of the second push rod (805), it can push the second push rod (805) to move into the box (1001). At the same time, the seventh spring (807) is compressed and interacts with the hollow plate. The side walls of (13) abut against each other, thereby pushing the hollow plate (13) to move. The sixth spring (707) deforms. When the tip of the cam (804) passes the end of the second push rod (805), the second push rod (805) can move and reset under the action of the seventh spring (807). The hollow plate (13) can move and reset under the action of the sixth spring (707). By repeating this process, the hollow plate (13) can move back and forth, and drive the high-strength bolt fastener to shake, thereby making the quenching effect better. S5: After quenching is completed, when the first moving plate (12) moves away from the hollow plate (13), the quenching oil above the first moving plate (12) can be gradually discharged, thereby gradually exposing the high-strength bolt fasteners. When the first moving plate (12) moves downward away from the hollow plate (13), the triangular block (904) is driven downward by the mounting plate (903). When the triangular block (904) abuts against the top of the first push rod (902), it can push the hollow plate (13) to move. At the same time, the sixth spring (707) deforms. When the triangular block (904) passes the first push rod (902), the hollow plate (13) can move and reset under the action of the sixth spring (707). By repeating this process, the hollow plate (13) can move back and forth, which can drive the high-strength bolt fasteners to shake, thereby facilitating the removal of the quenching oil from its surface and ensuring the quality of quenching. S6: Next, the lifting module (11) drives the first moving plate (12) and the hollow plate (13) to move upward and reset. When the hollow plate (13) slides along the first inclined surface (307) to the side wall of the push plate (306), it can push the push plate (306) to move. At the same time, the connecting frame (305) and the moving rod (301) drive the second moving plate (304) to move. At the same time, the first spring (303) is compressed. At this time, the quenching oil in the liquid collection tank (1003) can be squeezed and returned to the liquid supply tank (1002) through the connecting pipe (308).

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